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 A271752 Number of set partitions of [n+1] such that n is the largest element of the last block. 2
 0, 1, 4, 15, 59, 250, 1145, 5649, 29874, 168509, 1009215, 6391484, 42648083, 298865333, 2193219124, 16811408659, 134289313167, 1115559002906, 9619253991637, 85950089855573, 794567157607386, 7588822028424393, 74783864494826723, 759461721024357540 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Alois P. Heinz, Table of n, a(n) for n = 1..576 Wikipedia, Partition of a set FORMULA a(n) = A271466(n+1,n). EXAMPLE a(3) = 4: 124|3, 14|23, 14|2|3, 1|24|3. a(4) = 15: 1235|4, 125|34, 125|3|4, 12|35|4, 135|24, 135|2|4, 13|25|4, 15|234, 15|23|4, 1|235|4, 15|2|34, 1|25|34, 15|2|3|4, 1|25|3|4, 1|2|35|4. CROSSREFS A diagonal of A271466. Sequence in context: A199210 A129155 A219312 * A291244 A290910 A369838 Adjacent sequences: A271749 A271750 A271751 * A271753 A271754 A271755 KEYWORD nonn AUTHOR Alois P. Heinz, Apr 13 2016 STATUS approved

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Last modified May 24 21:45 EDT 2024. Contains 372782 sequences. (Running on oeis4.)